Popular Mechanics (South Africa)
MAY 1974
New from Polaroid: Instant Negatives
In the ’70s, Polaroids were super popular but you could only print out one photo at a time. That changed in ’74 when Polaroid released a film pack that also had negatives. They were subject to the same process as regular photos and then soaked in sodium sulphite to remove the opaque backing and developer goo.